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| Flow | Description |
|---|---|
| 1 | Water flows from pump to boiler |
| 2 | From boiler to manifold |
| 3 | Default flow for water/steam |
| 4 | To group head |
| 5 | From manifold to drain |
| 6 | Pump safety valve to drain |
| 7 | Steam/water to drain |
| 8 | To hot water exit |
| 9 | From head to pressure gauge |
Parts
| Part Number | Description |
|---|---|
Group Head Steam Ring (54mm) | |
References
| Reference | URL |
|---|---|
| User Manual | https://www.breville.com/content/dam/breville/us/assets/miscellaneous/instruction-manual/espresso/BES870-instruction-manual.pdf |
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